Binding from combobox to textbox without using SelectionChanged event

Question

I am binding ID to a combobox, name to a textbox. When I change combobox value, the textbox should change too. But not using the SelectionChanged event of combobox But just using binding. Ex: combobox : ID001, textbox : name1 combobox change to: ID002, textbox :name 2. Thanks.